Demountable wheel rim



l atented Sept. 43, 1923.

era-res JOHN WENTZ'OF PERHAM, arlNNeso'zn, assrsNon or OIiEHALF rofiarorrann a; GANS AND oNn-rounrn "330 P. F. Joe-EL, BOTI-LOEPERHAM; iviIN nso'ra.

-DEMOUNTABLE WH E em.

a lication filed. April'2l, 1921. Serial No. 463,222.

all whom it may concern." 7

ie it known that I, Jor-IN ll nnrz, a citizen oi. the United States, residing at Perham, in the county of Ottertail and State of Minnesota, have invented certain new and useful improvements in Demountable ll heel Rims; and'l. do hereby declare the following to be full, clear, and exact description of the invention such as will enable others skilled the artto which it appertains to make and use the same.

.lliy invention has for its object to provide an extremely simple and highly efficient demountable wheel rim for automobiles and other motor-propelled vehicles and, generally utter described and defined the claims.

theaccoinpan p; drawings, which illustrate the invention like characters in dicate like parts throughout the several views.

Referring to the drawings:

Fig. l is a side elevation with some parts broken away, illustrating my improved rim applied to a wheel;

Fig. 2 is a fragmentary view looking at the outer face of the wheel rim;

Fig. 3 is a section on the line'3-3 of F ig. 2;

Fig. 4 is a section on the line 4-4 of Fig. 1;

Fig. 5 is an enlarged section of certain of the parts shown in Fig. 3, other parts being removed; 7

F 6 is a fragmentary view looking downward at a portion of the wheel telly and tire toiind in the vicinity of the section line t-l of Fig. 1; and

Fig. 7 is a fragmentary view looking at the inner surface of a. fragment or part of the demountalole rim.

Of the parts of the wheel proper, the numeral 8 indicates the hub, the numeral 9 the spokes. the numeral 10 tlie telly and the numeral 11 the metaltelly band. This telly band 11 at points ciroumferentially spaced around the wheel, is formed with in wardly bent transversely oblique dove-tailed seats 12 that tightly fit correspondingly formed seats in the telly 10. This is the construction that would be employed when the wheel fellv 10 is a wooden structure, but

in other wheels. the telly and telly band with the oblique dove-tailed'seats mightbe stated. the s are consists of the novel devices and combinations otdevices hereinan integral 'or otherwise 1 formed .iinetal structure. "Preferably; the" oblique d0ve tailed seats 12' are tapered from'the outer a purpose which will presently appear.

.ter than the external.diameter-0f lthefelly bandll; and on its inner tace,it is provided with inwardly. projecting oblique dove-tailed flanges 15 that fit the corresponding dovetailed seats 12 of the telly band anchlience',

rection from theouter side toward the inner side of the wheel. As preferably construct side toward the innerside oi the wheeh for 7 TI he deniountablerim 13, which holds the are preferably also slightly taperedin' a-died. the dove-tailed flanges "15 are formed with. expanded bases 15, welded or other.-

wise rigidly secured tothe demountable rim, 13'and arranged to space the latter slightly fromthe telly band 11, as shown in Fig. l.

The tire It has the ci'istoinary'threaded valvestem 1e and, hence, to arrange for the application of the demountable rim, the wheel telly 10 and telly band 11 are formed .with an open notch 16 adjacent to. its valve stem seat 17. This notch afi'ords a lateral entrance passage and exit passage for the valve stem and extends parallel to the oblique seats 12. r

1 The notch or passage 16, of course, somewhat weakens the wheel folly and; hence,.to reinforce the folly across this gap, a bridge bar 18, preferably" in the form of a'metal channel, is pivoted at 19 to the wheel telly and fellybandand is arranged toembrace the same when turned to the position indicated by full lines in Fig. 6 but toopen the notch or passage .16, when turned outward,

as shown by dot-ted lines in Fig. 6.

The bridge bar 18, at thecentral portion of its inner side, is formed with a semi-on cular lock flange 20, which, when the bridge bar is closed, lies close to the valve stem 14 and is adapted to be engagedand held within the flange of a concave lock nut 21 that works with threaded enjgagement'on the valve stem. Thus. the bridge bar will be securely locked in a closed position. where it embraces the telly and reinforcesthe-same across thenotch. or entrance passage 15.

The nut 21 applied as described, in a sense. affords a lock for holding "the demountable rim in position on the wheel, but

as this would probably throw too much' telly The conical point of-this set screw is strain on the yalve StGDl,'I preferably procone-pointed set screw '22, which, as shown, Works With threaded engagement in a bush- 111g 23 passe-Cl radially through the Wheel arranged to engage a perforation 24: formed ,in one of the clove-tailed lool; flanges of the demountable rim; V

.Obviously, when the set serewis screwed intothe hole 2e, as best sh'oiyn in Fig. 3, the demountable rimbannbt move circumferentially on the Wheel telly and, hence; cannot be removed therefrom or become, loose thereon. l

VVh'en the demountahle rim is to removed, the bridge bar must he turneclinto its dotted line position, Fig. 6, and the s let screw 22 must be turned out of the hole 24 and then the clemountah lerim may be; re moved by a sort of a combined backward rotary antlllateral ,niox ement or, in'other words, by a spiral movement such-as will carry the clove-tailed loclr'fianges 15 o it of the 'tlove-tailecl'seats 12. .Obyiously, the (l e-mountable i'iin must be applied by reverse spiral movement, which ,"eauses thecloye tailed flanges 15 to enter the seats 12 as far as t e r d e em nt w re iii them to go, and when the rim is locked I heel 'cent to the val bythe set screw or look screwy 22, there will be absolutely no playfbetween the rim ancl willhe securely locked to Obviously, this rim may be appliesl to the Wheel 'qiiiokly iylieel and the rim the Wheel.

i 1 qu1eily r P I removed there'rrom.

that I claim 1s:

1. The" combination with a Wheel, of a clenionntahle rim, the Wheel telly havinga lateral :entranc'apassage for the valve stem of a tire applied to said rnn, and a ohannel shap ecl br dge bar pivotally connected to the iyh eel "telly and arrangecl to (anh-race the in having a valve stem projecting radially i11- iy aricl through said rim; said felly having an oblique lateral entrance passage for said valve stem, and a blTlClffIQ loar piyotecl to the elly "and applied across the gap formecllhy said latera-l entrance passage, saicl britlgfe bar haying a look flange adjastem, and a nut on the yalvestein eiig ging the flange on, said bridge bar and locking the same, in position and against pivotal m'oyement.

In testimony whereofl afifixmy signature.

" JQH W IZ: 

